<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <cpn></cpn>
        <cpn></cpn>
        <cpn></cpn>
    </div>
    <template id="cpn">
        <div>
            <h2>header</h2>
            <p>contents</p>
        </div>
    </template>
    <script src="../vue.js"></script>
    <script>
        Vue.component('cpn', {
            template: '#cpn'
        })
        const app =new Vue({
            el: '#app'
        })
    </script>
</body>
</html>